~~ 
224 Thirty-fourth Annual Meeting. 
April 15 the ice left my pond and shortly afterwards I found 
perch in the act of spawning, which continued on until the 12th 
of May. Most of the eggs were gathered in strings after the 
fish deposited them on the branches which I placed in the ponds 
for that purpose, and they were therefore very easily collected. 
When the intention is to hatch in a pond instead of allowing the 
eggs to remain on the branches, gather them and place on egg 
trays, allowing the trays to float loosely over the pond, the 
action of the waves will keep the eggs free from sediment. 
At the present time I am unable to say how successful my 
pond work will be, as I do not intend to draw off the water until 
the month of September. 
The method that appeals to me as being the proper one to 
pursue, is the using of a series of troughs 16 feet long, 18 inches 
wide and 8 inches deep. Eggs can be placed in the troughs on 
trays. A trough of the dimensions I have mentioned has a 
capacity of 10,000 perch until they are three months old. They 
will readily accept milk-curd as soon as the sac is absorbed. 
I continued feeding the curd until they were twelve days old, 
and after that I fed them on ground liver, which was taken 
very readily. In my observations I have not found any disease 
of any kind to attack them. 
I have also been watching very closely to discover any indi- 
cations of cannibalism. Thus far I have not detected any. 
I verily believe that by using these methods and growing 
the fish to the size here exhibited, our rivers and inland lakes 
will soon again teem with these fish. 
DISCUSSION. 
Mr. Buller said while reading his paper: I have a few spec- 
imens in a bottle that I have fed on milk curd and beef liver. 
( Exhibited. ) 
I know these can be hatched in jars. 
There is a chain of lakes in the state of Pennsylvania cover- 
ing five counties, and these lakes are kettle holes, varying in size 
from 150 acres to a thousand; and I| think there are 192 in the 
chain. Long years ago these lakes were practically all inhabited 
by brook trout, but by the denuding of the forests the brook 
